Fastener-tape feeding and control means for sewing machines



L. ROSEMAN April 21, 1931.

FASTENER TAPE FEEDING AND CONTROL MEANS FOR SEWING MACHINES Filed Jan.24, 1928 5 Sheets-Sheet l INVENTOR. leoflosemang ROSEMAN 1,801.570

Filed Jan. 24, 1928 5 Sheets-Sheet 2 Aprll 21, 1931.

' FASTENER TAPE FEEDING AND CONTROL MEANS FOR SEWING MACHINES INVENTORRose/M714 ATTORNEY Q h ww m April 21, 1931. ROSEMAN 1,801,570

FASTENER TAPE FEEDING AND CONTROL MEANS FOR SEWING MACHINES Filed Jan24, 1928 5 Sheets-Sheet 3 60 Fig. 4 37 g 55 {I 57 1:.i'..";:t:::;1 MT

INVENTOR eajfoseman ATTORNEY ROSEMAN 1,801,570

CONTROL MEANS FOR SEWING MACHINES April 21, 1931.

FASTENER TAPE FEEDING AND 5 Sheets-Sheet 4 Filed Jan. 24, 1928 TTORNEYINVENTOR Q: BY Zao Rosana/a April 21, 1931. RQSEMAN FASTENER TAPEFEEDING AND CONTROL MEANS FOR SEWING MACHINES Filed Jan. 24, 1928 5 Sheets-Sheet 5 WI I IIIIIIIIII r1 I l I l l l |I INVENTOR. ,Zkofias'em/awv,

A TTORNEY Patented Apr. 21, 1931 UNITED STATES PATENT OFFICE LEOROSEMAN, OI NEWARK, NEW JERSEY, ASSIGNOR TO PRIME MACHINE CO, NEWARK,NEW JERSEY, A CORPORATION 01 NEW JERSEY FASTENEB-TAPE FEEDING AND.CONTROL MEAN FOB SEWING MACHINES Application filed January 54, 1928.Serial No. 249,028.

I hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use 5 the same, reference beinghad to the accompanying drawings,

erence marked thereon, which form a part of this specification.

This invention relates in general to an attachment for sewing machinesfor sewing work havin thereon needle impenetrable objects where y acontinuous row of stitches may be formed in the work with certain of thestitches traversing said objects and the needle is protected againstcoming into contact with such impenetrable objects in such a manner asto become broken. More particularly the invention is directed toward anattachment for sewing machines utilized in sewing fastener tape whichhas wire fastener members thereon to eliminate or reduce the possibilityof the needle striking the fastener elements during the formation ofcertain of the stitches which traverse the fastener elements when thetape is being sewed to the edge of a garment or being stitched toreenforce the tape or for securing of the fastener elements thereto.

One object of the present invention is to provide in combination withthe work-feed mechanism and the sewing mechanism including areciprocating needle of a sewing machine when the machine is used forsewing work having impenetrable objects thereon to be traversed bystitches, an attachment embodying novel and improved features ofconstruction to prevent contact of the needle of the sewing mechanismwith said objects during the sewing operation, said attachmentcomprising a stop device which shall be moved into and out of the pathof said objects and engaged by each thereof as the object approaches thepath of the needle on its work-penetrating movement, said stop devicebeing actuated into the path of each of said objects to stop and holdthe object adjacent to but out of the path of said needle duringpenetration of the work by the needle preparator to forming the stitchto traverse said' ob ect. In other words, the invention and tocharacters of ref-' provides attachment of the character described forpositively holding the impenetrable object or fastener element closeladj a.- cent to but out of the path of the needle during thework-penetrating movement of the needle until the needle has penetratedthe work for the beginning of the stitch to travi' erse the object,whereby it is practically impossible for the object to become located inthe path of the descending needle.

Another object is to provide an attachment of the character describedfor sewing formation of the traversing stitch.

A further object is to provide such an attachment which can be utilizedin connection with the usual work-feed mechanism and presser foot of asewing machine and which will ensure the movement of the object orfastener out of the path of the descending needle during the formationof the traversing stitch, so as to avoid the possibility of the needlestriking the object or fastener element upon the descent of the needleat the end of the traversing stitch.

Another object is to provide in combination with such a stop device. andwork-feed mechanism, auxiliary work-feed means, and means for governingmovement of the work against over-feeding by said work-feedingmechanisms and said work-feeding means to provide preliminarily at leastapproximate' ly the required spacing of the fasteners on the tape andproper presentation of the fasteners to said stop device so that thestop device may exactly and finally locate the fasteners in properrelation to the path of the needle.

Other objects of this invention, not at this time more particularlyenumerated, will be clearly understood from the following de taileddescription of the same.

The present invention is illustrated in the accompanying drawings, inwhich:

I Figure 1 is a front side elevation of a sewing machine equipped withthe novel improved fastener tape feeding and control means madeaccording to and embodying the principles of the present invention;Figure 2 1a a ntary horizontal section, taken on lme 2-2 in Figure 1;Figure 3 is an end elevation in part section; Figure 4 is a fragmentaryfront side elevation showing the operative position of the secondarystop or feed control mechanism; Figures 5, 6 and 7 are respectivelyfragmentary plan views on an enlarged scale showing various stages ofoperations performed by the primary stop and control means; and Figuredis a plan view on a large scale of the tape as sewn to garment edge. a

Figure 9 1s a detail plan view showing the automatic adjustment ofrimary control devices when sewing tape iaving fasteners m smaller thana given size.

Figure 10 is a detail plan view showing a modified form of primarycontrol means.

Similar characters of reference are employed in all. of the hereinabovedescribed views, to indicate corresponding parts.

Referring to said drawings, the reference character 10 indicates the bedplate of the sewing machine, upon which is mounted the arm 11, at thefree end of which is arranged the usual reciprocating-needle bar 12 andspring tensioned presser foot 13, the same being actuated from the mainshaft 14, which extends through said arm 11 in the usual way. While I donot necessarily limit mysel in such res ect, I nevertheless prefer to emloy a mac ine having the oscil ating or me type of needle bar, theneedle or needles of which enter the feed dog 15 and wait)? forwardsynchronously with the forw work feeding movement of the latter. I mayalso embod my present invention in either a single nee le machine or atwo-needle machine, and in the accompanying drawings I have shown thelatter type in which the needle bar 12 is provided with a needle 12' anda second needle 12", the same being arranged abreast of each other insuitably spaced apart relation. The needles cooperate with an well knownform of shuttle or sewing hoo mechanism (not shown) located in the usualmanner beneath the bed 10 of the machine.

Secured upon the bed plate 10, and aligned to the path of movement offastener tape over the same toward the stitching mechanism of themachine, is a guide-plate 16, the same being undercut as at 16 tooverhang ne side of the fastener ta and to form a guideway through andwithin which the tape passes toward the stitching point; and opposed tosaid guide-plate 16 is a second guide member, 17 to overhang theopposite margin of the fastener tialpe.

v To i ustrate the operation of the machine on and the novel tapefeeding and control means according to the principles of this invention,

the 100 s 20 of which are exteriorly projected from t e bod of saidtape. In order to more clearly explain the functioning of the mechanism,I have shown and shall hereafter describe the operations in connectionwith eye tape, the eyes of which are spaced one inch apart, and with thestitching mechanism of the machine adapted to produce twelve stitches tothe inch. In so illustrating and describing the novel features andfunctions of the machine according to this invention, I do not intend toimpose any limitations as to the spacing of the fasteners of the tape,whether they be hooks or eyes, or as to the number or kind of stitchesproduced by the sewing mechanism, since in such respects the machine maybe readily constructed and adapted to function with relation to anydesired spacing of the fasteners of the tape, or with different numbersof stitches per inch, or different kinds of stitches across andintermediate the fasteners of the tape.

In practice the e e tape is first passed through a delivery eed andcontrol mechanism whereby the same is drawn from a roll thereof (notshown) and then passed through the guide means 1617; and the garment 19to which the tape is to be sewn is registered with the latter byapplying the garment thereto at a point in advance of the stitchingpoint so that both tape and garment pass between the presser foot 13 andfeed-dog 15 by which the stitch forming advance thereof relative to thesewing mechanism is produced. Ordinarily the edge of the arment 19 isturned or folded by passing t e same through a hemmer plate 21 inadvance of its movement with the tape to and between the presser footand feed-dog.

J ournaled in and between an upper bearing 22 fixed on the machine arm11 and a lower bearing 23 fixed on the bedplate 10 is a vertical shaft24. This shaft 24 is driven from the main shaft 14 of the machine bymeans of an intermeshing worm 25 and worm gear 26 respectively fixed onsaid main shaft 14 and vertical shaft 24. Fixed on said bedplate 10 isbearing frame 27 provided with transversely aligned bearing 28 in whichis journaled a transverse driven shaft 29. Said transverse shaft 29 isdriven from said vertical shaft 24 by means of intermeshing screw gears30 and 31 respectively fixed on said vertical and transverse shafts.

' The delivery feed and control mechanism com rises a bearing bracket 32which is fixed on t e bed plate to overhan the front side thereof. Journaled in said aring bracket is a lay shaft 33. This lay shaft 33 isdriven from said transverse shaft 29 by means of intermeshingscrew-gears 34 and 35 respectively fixed on said transverse and layshafts. Fixed on the outer end of said lay shaft 33, so as to be rotatedthereby is a feed roller 36, constitutin one of a air of such rollers.At its forwar end said earing bracket 32 ossesses a depending arm 37,and journale on a stud 38 carried by said depending arm 37 is an idlerguide-roller 39 vertically alined relative to said feed roller 36. Saidbearing 7 bracket 32 is further provided with a supporting plate 40disposed in vertical plane intermediate said feed roller 36 andguideroller 39 with its face substantially tangent to the tape bearingcircumferential surfaces of said rollers. Projecting forwardly from thelower end of said bearing bracket arm 37 is a knuckle 41, and pivotallyconnected with said knuckle 41 by a fulcrum stud 42 is an upwardlyextending hearing arm 43. Journaled in the upper end of said bearing arm43 isa spindle 44, and fixed at the outer end of said spindle is a feedroller 45 constitutlng the second of said pair of suc rollers, the samebeing adapted to oppose and cooperate with said feed roller 36. Saidsecond feed roller 45 is driven in an opposite direction to the feedroller 36 by means of intermeshing spur gears 46 and 47 respectivelyfixed on sa1d lay shaft 33 and spindle 44. The second feed roller 45 ispreferably annularly grooved as shown to provide clearance space for thepassage of the metallic eyes of the fastener tape, as the latter ismoved through and between the pair of rollers 3645. The tape engagingfaces of the rollers 3645 are preferably roughened, as by knurling, tobetter grip the tape when operatively engaging and feeding the same. Itmay here also be mentioned that the guide roller 39 is preferablyannularly grooved as shown to correspond to the total width of the tapepassed over the same, so as to hold the latter against lateraldisplacement therefrom. The bearing arm 43 is yieldably pressed inwardto in turn press and maintain said feed-roller 45 into operative tapegripping relation to the feed-roller 36; and to this end suitablepressure spring means 48 is provided. In order to facilitate theseparation of the feed rollers 36 and 45 to permit of operativeinsertion of the fastener tape therebetween there is pivotally connectedwith the bracket bearing 32 a lever arm 49 having at its pivoted endacam 50 which, when swung outwardly by the upturning of said lever arm49, engages a nosing 51, with which the upper free end of said bearingarm 43 is provided, to thereby exert an outwardly swinging pressure onsaid bearing arm 43 against the tension of said sprlng means 48, thusseparating said feed roller 45 from the feed roller 36, all of whichwill be readily understood from an inspection of Fig. 3 of the drawings.

The means for governing or controlling the advance of the ta e by theabove described delivery feed mec anism, the operation and advantages ofwhich will be hereinafter more fully set forth, comprises a timedsecondary stop mechanism operative to enga e the eyes of the tape toarrest movement 0t the latter whereby tendency to improperly timedmovement toward the stitching mechanism is prevented and a uniformproperly controlled movement of the tape and its fasteners to thestitching point of the sewing mechanism is initially assured, wherebythe selected number of stitches between and across the fasteners ismaintained. Connected with said supporting plate 40 is guide plate 52adapted to overhang the rearward marginal portions of the tape 18; saidguide plate being located between the feed roller 36 and guide roller39. Mounted on the right hand end of said supporting plate 40 is aslideway member 53 in which is slidably disposed, for forward and backreciprocation therein, a stop bar 54 provided at its forward or free endwith a stop finger or projection 55 adapted to conform to the sides ofthe eyes 20 of the fastener tape. The means for automaticallycontrolling and timing the operation of the stop bar 54 whereby its stopfinger or projection 55 may be projected into and withdrawn from thepath of movement of the eyes of the tape as required, preferablyconsists in an oscillatable lever 56, to the lower arm 56' of which thetail end of said stop bar 54 is coupled by the pin and slot connection57. Said lever 56 is pivoted on a fulcrum stud 58 with which bearingbracket structure 32 is provided, and the upper arm 56" of said leverpossesses a roller projection 59. Fixed on said transverse shaft 29, soas to be rotated thereby, is a rotary cam wheel 60 adapted to engagesaid roller projection 59 to produce timed oscillations of said lever 56and consequent timed reciprocations of said stop bar 54. A pullspring 61interconnected between the lower arm 56' of the lever 56 and an anchorstud 62 carried by said bearing bracket structure 32 maintains saidlever Cooperating with each eye 20 of the fastener tape 18 as it passesthe sewing mechanism of the machine, is a primary control mechanismadapted to positively hold and dispose said eye so as to assure suchposition of the same relative to the reciprocating needle, as the Workis advanced by the feed of the machine, that all risk of contact of theneedle with the eye is avoided, and properly traversing stitches withrespect to each individual eye are obtained. This primary controlmechanism comprises a housing 63 pivotally mounted on the bed-plate 10to extend toward the fastener bordered margin of the tape 18 andadjacent to the stitching joint of the sewing mechanism of the machine.Said housing 63 may for certain purposes, if

thus pivotin et 64 secured on said bed plate bearing bra 10 to overhangthe housing so as to receive the pivot stud 65 with which said housingis furnished. The forward end of said housin 63 is normally disposedandyieldably hel in forwardl swun initial position against an adjustab epositioning stop 66, WhlCh s supported b and in connection with saidbearing brac et 64, by means of a pull spring 67 which is suitablyconnected by one end to the forward end portion of the housing, andbyits opposite end is anchored to said bracket bearm base or othersuitable stationary point. idably related to and carried by said housing63 is a main stop bar 68 having a tail-piece 69 projecting exteriorlyfrom the rearward end of said housing Ad'acent to the rearward end ofsaid housing 63 1s a bearing support 70, forming a part of said bearingframe 27, in which is fixed a fulcrum stud 71. Pivoted on said stud 71to depend therefrom is a lever arm 72 having a bifurcated lower endportion 73 which straddles and operatively engages a push-piece 74 withwhich the tail piece 69 of the main stop bar 68 is provided. Acompression spring 75 is arranged intermediate said lever arm 72 and astationary part of said bearing frame 27, said spring normally thrustingagainst said lever arm 72 to swing the same forward and in turn slideforward said main stop-bar 68 to normal operative position as determinedby a stop screw 76 mounted in said housing 63 to coact with a stopshoulder 77 with which said stop-bar is' provided. Also slidablydisposed in said housing 63 in side by side relation to said main stopbar 68 is an auxiliary sto -bar 78, the same being yieldably held inorwardly moved operative positionby a pull spring 79 anchored on the topof said housing 63 and connected with a coupling pin 80 Wl'llCh isaflixed to the rearward end portion of said auxiliary stop bar, andwhich pro'ects exteriorl through a slot 81 above said ousing 63. henormal position of said auxiliary stop bar is determined by a stop screw82 mounted in said housin 63 to coact with a stop shoulder 83 with w ichsaid auxiliary stop bar is provided. Said main sto bar 68 and auxiliarystop bar 78 are coup ed to ether for relative movement by means 0 anotch in the former adapted to provide longitudinally spaced apartforward and rearward shoulders 84 and 85, and said stop bar 78 isprovided with a coupling pin 86 which enters between said shoul ers 84and so as to be operatively engaged thereby at proper times. The meansfor imparting the desired rearward swinging movement to said housing 63and to the stop bars carried thereby comprises an sired rearward swingof its forward end. The

means for retracting the stop-bars 68-78 at proper times comprises acam-wheel 90, also fixed on and rotated by said transverse shaft 29.Said cam-wheel 90 is provided on its circumference with a first cam-stop91 and a second cam step 92 which, as the camwheel rotates, movesuccessively into enga ement with a roller stud 93 mounted on t 0 sideof said lever arm 72 to im art successive rearward swinging impu sestheretov which are transmitted through the pushiece 74 to the tail-piece69 of the stop bar or purposes hereinafter made clear. The stop1 bar 68is provided at its forward end wit a stop finger 68 suitably shaped tofit the sides of the eyes 20 of the tape; and in like manner, the stopbar 78 is also rovided with a similarly shaped stop finger 8.

In the operation of the machine, the eye tape 18 is led from a supplyreel (not shown) over the guide roller 39, and then upwardly over thesupporting plate 40 and through the guide plate 52 to pass between thedelivery feed rollers 36 and 45 (the latter having first been separatedlaterally by raising the lever 50 to permit of the insertion of the tapetherebetween). When the lever 59 is released, the pressure of the springmeans 48 presses the delivery feed rollers 36 and 45 to ther so as togrip the tape. The leading on of the tape exten s forwardly over andfrom the roller 36 through and between the guidin device 16 and 17, andis inserted between t e presser foot 13 and feed dog 15 of the sewingmechanism. The garment, to which the tape is to be sewn, is passedthrough the hammer 21 so as to overlay the tape between the presser footand feed dog. The work having thus been positioned ready for the sewingoperation,

- the machine is started; as-the machme 0 erates power is transmittedfrom its main s aft 14 t rough the intermediate transmission mechanismalready above described to the gripping feed rollers 36 and 45, therotation of which feeds forward the tape toward the sewing mechanism ofthe machine at a predetermined rate, while at the same time drawing thetape from the supply reel. It will thus be understood that,incidentally, the gripping feed rollers 36-45 relieve the presser footand feed dog mechanism of the sewing machine from the burden of drawingoff the tape from the supply reel, so that the presser foot and feed dogmechanism may advance the work merely for stitch forming purposes.

The (primary control mechanism which is adapte to positively adjust,hold and dispose each eye of the tape, as it passes the sewingmechanism, in such manner as to assure the traversing of the sewingneedles across the metal eyes without danger of contact with the latter(with consequent risk of either breaking the needle or injuring theeye), operates as follows:

The housing 63 is normally held stationaryagainst the stop 66, and thestop bars 68 and 7 S are rojected forwardly so as to lie in the path 0the eyes 20 of the tape closely adjacent to the sewing point of themachine. As an eye approaches the sewing point it engages t e stopfinger 68 of the projected bar 68 at a moment prior to the descent ofthe needle 12 in front of the forward side of the e e. The engagement ofthe eye by the stop nger 68' both adjusts the eye relative to the pathof reciprocation of the sewing needle 12' and prevents the eye fromadvancing to such an extent as would be likely to bring the forward sideof the same into the path of the sewing needle, thus positively'assuringthat the descending needle in completing the approach stitch a (see Fig.5), enters through the garment and tape at a predetermined point closelyadjacent to the forward outer side of the eye, and so as to assure thatthe succeeding formed stitch t will properly traverse such part of theeye without any risk whatever of striking the metal of the latter. Bythe time the needle 12' has descended on the outside of the eye incompleting the eye-approaching stitch a, and before it is againwithdrawn upwardly preparatory to a. succeedin downward stroke in makingthe succeeding first eye traversing stitch t, the first step of thecam-wheel 9 0 is timed to engage the roller 93 of the lever arm 72,whereby an initial rearward swinging movement of the latter is produced.This initial movement of the lever arm 72 is transmitted through thepush-piece 74 to the tail piece 69 of the stop bar 68, whereby thelatter is retracted to withdraw its stop finger 68 from the eye so thatsaid eye may proceed forward under the advancing movement of the feed ofthe sewing mechanism. The initial retraction of the stop bar 68 bringsthe shoulder 84 thereof into contact with the pin 66 of the stop bar 78,without, however, moving the latter. As a consequence of this operationthe stop finger 7 8 remains in the path of the advanced eye and isengaged thereby'so that as the intermediate stitch z' is completedbetween the sides of the eye, the latter is again positively held in aposition to assure that, in descending to complete said intermediatestitch i, the needle 12 is prevented from engaging the rearward side ofthe eye and so positioned relative to said eye as to assure thetraversing thereof by the next succeeding formed traversing stitch t(see Fig. 6.). By the time the needle 12 is raised, after completion ofthe intermediate stitch z' and preparatory to making the rearwardtraversing stitch t, the second step 92 of the cam 90 is brought intoengagement with the roller 93 of the lever arm 72 to again produce asecond retracting movement of the push-bar 68, which, by rea son of thefact that its shoulder 84: is at the time engaged with the pin 66 of thestop bar 78, also, therefore, transmits the retractive movement to saidstop bar 78 so that the same is withdrawn from the path of the eye asthe rearward traversing stitcht is made (see Fig. 7).

From the foregoing it will be observed that should an eye approach thepath of the needle in such position on the tape as to stop in the pathof movement of the needle during a needle penetrating moment in theoperation of the sewing machine, the eye will be positively stopped andheld back by the fingers 68' and 7 8 during the work-feed movement asthe eye approaches the path of the needle, whereby the eye is positivelyprevented from moving to a point directly beneath the needle. The eye isso held until the needle has penetrated the work, but is released uponthe next said work-feeding movement during which the traversing stitch tis made. The work-feed mechanism then positively moves the eye forwardlybeyond the path of the needle so that the needle cannot strike the eyeon its next descent at the end of the traversing stitch. The machinemay, therefore, be operated at a high speed with full assurance thatproper stitching will be produced, and that the needle will not bebroken or damaged by contact with any of the eyes.

The machine may be operated as a single needle machine, or (as shown inthe drawings) the same may be operated as a two needle machine, wherebya second line of stitching 00 may be produced through the garment andthe inner edge of the tape body 18.

As shown in Figs. 5, 6 and 7 the distance between the stop projectionsof fingers 68' and 7 8 of the respective stop-bars 68 and 78 is normallypredetermined to accommodate an eye of a given size, that is the spacedrelation of said stop fingers 68 and 7 8 is determined according to thewidth of an eye of given size so that when such eye engages the secondstop finger 78' its rear side will be properly disposed relative to thedescending path of the sewing needle 12. If desired, selectively usablemeans may be provided whereby, in operation of the machine,

the functioning of the stop-fingers may be accommodated to eyes ofsmaller or larger sizes than said given size. Such means has beenillustrated in the accompanylngdrawings, and consists in a means forposationing the housing 63 to properly dispose the ing'63 (as shown insecond stop-finger for proper engagement (in one case with a'smaller eyeafter operation and wit drawal of the first st p-finger 68. Such meanscomprises a cam wheel 88, which, when the machine is operating onmaximum size e es is withdrawn on the shaft 29 so as to be inoperativerelative to the pivoted hous- Fig. 2) but which, when a smaller eye isoperated upon, .is set forward and locked on saidshaft 29 in activerelation to the housing 63. In operation, after the stop finger 68' hasfunctioned, and

while the same is withdrawn to permit ad vance of the eye for theformation of a first traversing stitch t, the rotated cam-wheel 88 istimed to carry its cam portion 89 into engagement with the nosing 87' atthe rear end of the housing 63, and by engagement therewith swings thehousing against the tension of the spring 67 so that its forward "end isswung rearwardly to shift the stop fin r 78' to roper pos1tion to engageand he (1 the smal er eye preparatory to the formation of the secondtraversing stitch t (see Fig. 9). It will be obvious that the amount ofshifting movement imparted to the housing 63 and the stop finger 78' maybe made to corre. 0nd exactly to the difference in width as tween an eveof given size and a smaller sized eye, by adjusting the cam wheel towardthe nosing 87 to produce the desired amount of throw, and that by theabove described means the mechanism may be readily adapted to functionin connection with more than one size'of eye from an eye ofpredetermined maximum size to one of minimum size. Conversely, byproperly timed manipulation or shifting of the housing prior to theengagement of an eye by the first stop finger 68, whereby said finger isslightly advanced, and then releasing said housing for return to normalposit-ion prior to the stopped engagement of the eye by the second stopfinger 78', it will be obvious that the mechanism may be accommodated tosizes of eyes larger than said given size of eye, all of which will beobvious.

In the operation of the sewing mechanism, the stitch forming advance ofthe work is primarily effected by the presser foot and feed dog devicesof the sewing mechanism to produce the desired number of stitchesextending between and across the eye of the tape. If uncontrolled suchwork advance by the presser foot and feed dog devices for variousreasons may not operate uniformly, with the result that the fastenertape may be inaccurately fed so that the eyes thereof might eventuallyget out of proper time relative to the primary control means and its stofingers. In order to assure the uniform and yet controlled movement ofthe tape by the sewing mechanism feed devices and relative to theprimary stop fingers I have provided the secondary feed control tocooperate ing forward with the sewing mechanism feed devices. Inoperation the sewing mechanism feed devlces will feed away or advanceall of the tape which the secondary feed control devices releases, butthe secondary stop bar is reciprocated in timed relation so as toprojeot its stop finger 55 in the path of each eye of the ta e, so thatif the sewing mechanism feed devices tend to over-feed t e tape suchover-feeding is checked by the engagement of the eyes with' the stopfinger 55 and the feed rollers 36-45 are prevented from feedthe tape.The feed rollers 3645 are sized to feed the tape a little in excess ofthe stitch forming advance of the work by the sewing machine feeddevices, which is calculated to produce twelve stitches between andacross the eyes, or twelve stitches to the inch, and consequently thestop finger 55 by engaging each eye tends to hold back the tape onceduring the formation of'each group of twelve stitches. therebv limitingthe production of the twelve stitches to the distance between and overthe eves of the tape, e. g. one inch. This functioning not onlv assuresa controlled tension on the advanced tape calculated to assist in theproduction of the desired number of stitches between and across the eyesby the feed devices of the sewing mechanism. but also tends tocompensate for any slight inaccuracies which may exist with respect tothe-relative spacing apart of the eyes on the tape.

The secondary stop finger 55 and the auxiliary feed rollers 3645 therebyserve to ensure preliminarilv approximately therequired spacing of theeves on the tape and proper presentation of the eyes to the stop fingers68'. 7 8 and said fingers then exactly and finally locate the eves inproper relation to the path of the needle.

In the foregoing description of the primary control mechanism.constituted by the stop bars 68 and 78. the construction and functioningthereof has been fully disclosed. As an alternative to the double stopbar construction and arrangement therein involved,

disposition of the eyes of the tape at the sew-- ing point may beaccomplished by a single stop bar but nevertheless according to thegeneral principles involved in this invention. This modified arrangementis illustrated in Fig. 10 of the drawings, and comprises. the pivotedhousing 94 in which is slidably mounted a stop bar 95 having a stopprojection 95'. said stop bar being subiect to timed retraction by a camactuated lever arm mechanism corresponding to that already abovedescribed. Said housing 94 is provided with a nosing 96 to cooperatewith a cam wheel 97 having a lateral cam projection 98. In operation,the stop bar 95 is normally projected todispose its stop finger 95' inthe path of an eye 20 approaching the sew-, ing point, and prior toproperly timed engagement of-said eye 20 therewith, the for- I ward endof the housing is swung rearward- 1 against the tension of a pull spring99 by the operation of the cam wheel 97 and its cam projection-98 todispose said stop finger 95 in a position to enga e and hold the eye 20relative tothe path 0 descent of a sewing needle preparatory toproducing a first traversing stitch t. As the traversing stitch t isformed, the cam projection 98 releases the housing 94 so that it mayswing under the tension of the pull spring 99 against a stationary stop100, thereby advancing the stop finger 95' to a second position adaptedto arrest and hold the eye preparatory to the formation of the secondtraversing stitch t, and thereafter the stop bar 95 is retracted toremove the stop finger 95 from the path of the eye to permit the advanceof the. work for the formation ofsaid second traversing stitch t.

I am aware that some changes may be made in the general arrangements andcombinations of the several devices and parts, as well as in the detailsof construction of the same, without departing from the scope of thisinvention as described in the fore going specification, and as definedin the appended claims. Hence, I do not limit this 'invention to theexact arrangements and combinations of the various devices and parts asset forth in the foregoing specification nor do I confine myself to theexact details of the construction of said parts as illustrated in theaccompanying drawings.

I claim:

1. In asewing machine having a sewing mechanism including work feedingmeans and a cooperating reciprocating needle, of means in combinationtherewith to control the movement of tape having metallic fastenersthereon relative to said sewing mechanism, said means comprising astop-bar mounted for movement toward and from the needle, said stop barhaving a portion normally lying in the path of movement of the fastenersand with which each fastener engages as it reaches the sewing needle topositively position the same relative to stitch forming descents of saidsewing needle, timed means to withdraw said stop-bar from the engagedfastener to permit the latter to advance during the for mation of eachstitch traversing the same, an auxiliary tape feeding means in advanceof the sewing mechanism of the machine, and means to govern the movementof the tape against over-feeding as advanced by said work-feeding andauxiliary tape feeding means.

2. In a sewing machine having a sewing mechanism including work feedingmeans and a cooperating reciprocating needle, means to control themovement of tape having metallic eyes thereon to predetermine theposition of the latter relative to the sewing needle, said meanscomprising a air of stop-bars ar ranged one behind the ot er and eachhavin a stop-finger for projection into the path 0 movement of said eyespast the sewing point, means for movably mounting said stop bars, andtimed means for successively withdrawing said stop-bars and their stopfingers to release said eyes during the formation of stitches traversingthe sides thereof.

3. In a sewin machine having a sewin mechanism including work feedingmeans an a cooperating reciprocating needle, means to control themovement of tape having metallic eyes thereon to predetermine theposition of the latter relative to the sewing needle, said meanscomprising a pair of stop-bars arranged one behind the other and eachhaving a stop finger for projection into the path of movement of saideyes past the sewing point, means for movably mountin said stop bars,timed means for successive y withdrawing said stop-bars and their stopfingers to release said eyes during the formation of stitches traversingthe sides thereof, auxiliary tape feeding rolls in advance of the workfeeding means of the sewing machine, and an auxiliary stop means fortimed engagement with' the eyes of the tape to govern the tape againstover-feeding.

4:. In a sewing machine having a sewin mechanism including work feedingmeans and a cooperating reciprocating needle, means to control themovement of tape having metallic eges thereon to predetermine theposition of t e latter relative to the sewing needle, said meanscomprisin a pair of stop bars arranged one behin the other and eachhaving a stop finger for projection into the path of movement of saideyes past the sewing point, said stop fingers being normally spacedapart for a distance corresponding to the width of an eye of given size,a pivoted housing in which saidstop bars are slidably mounted, means forholding said housing and the stop bars carried thereby in normaloperative posit-ion, timed means for successively withdrawing said stopbars and their stop fingers to release said eyes during the formation ofstitches traversing the sides thereof, and means for moving said housingfrom normal position to shift the operative position of one stop bar andits stop finger to accommodate the same to eyes of sizes different thansaid given size.

5. In a sewing machine having a sewing mechanism including work feedingmeans and a cooperating reciprocating needle, means to control themovement of tape having metallic eyes thereon to predetermine theposition of the latter relative to the sewing needle, said meanscomprising a pair of stop bars arranged one behind the other and eachhaving a stop finger for projection into the path of movement of saideyes past the sewing point, said stop fingers being normally spaced aart for a distance correspondi to the wi th of an eye of given size, aivote housing in which said stop bass are s idably mounted, means forholding said housing and the stop bars carried thereby in normaloperative position, timed means for successively withdrawing said stopbars and their stop rs to release said eyes durin the formation ofstitches traversin the sides thereof, and means for moving said housingfrom normal position to shift the operative position of one'stop bar andits stop finger to accommodate the same to eyes of sizes different thansaid given size, auxiliary tape feeding rolls in advance of the workfeeding means of the sewing machine, and auxiliary stog means in advanceof said feeding rolls, sai stop means having a finger for projectioninto the path of movement of the eyes, and timed means for actuatingsaid auxiliary sto means to release the same from an engaged eye.

, 6. In a sewing machine, a work feeding means, a reciprocating needle,stop mechanism adjacent to the needle to enga e metallic eyes offastener tape fed throug the machine, and means to roduce timed step bystep operation of said stop mechanism relative to reciprocable movementsof said needle to positively hold an eye engaged thereby to disposesides thereof to be traversed by stitches out of but forwardly adjacentto the path of needle descent preparatory to the for- I mation ofstitches traversing the sides of such eye.

7. In a sewing machine, a work feeding means, a reciprocating needle,stop mechanism adjacent to the needle to enga e metallic e of fastenertape fed throug the machir ie, and means to roduce timed step by stepoperation of sai stop mechanism relative to reci rocable movements ofsaid needle to positive y hold an eye enga ed thereby out of butadjacent to the pat of needle descent preparatory to the formation ofstitches traversing the sides of such e e, and auxiliary means inadvance of sai work feeding means to prevent over-feeding of thefastener tape at the sewing point of the machine.

8. In combination with a sewing mechanism including work feeding meansand a cooperating reciprocating needle, of movable stop means arrangedto engage protruding objects on materials fed to said sewing mechanism,whereby said objects, when en gaged by said stop means, are arrested todispose each part thereof to be traversed by stitches at a point near tobut in advance of the path of needle descent to be temporarily so helduntil the needle descends preparatory to a traversing stitch formation,and timed means to withdraw said stop means and thus release saidobjects for onward movement across the path of needle descent theformation of eachtraiversing stitch.

9. In combination with the work-feed mechanism and the sewing mechanismincluding a reciprocating needle of a sewing machine-for se work havingneedle impenetrable objects t ereon to be traversed by stitches, anattachment to prevent contact of the needle of the sewing mechanism withsaid objects, comprising a stop device movable into and out of the pathof said ob'ects and engaged by each thereof as the o ject approaches thepath of the needle on its workenetrating movement, and means foractuating said stop device into the path of each of said objects to stopand hold the ob'ect adjacent to but out of the path of sai needle duringpenetration of the work by the needle preparatory to forming the stitchto traverse said ob'ect.

10. he combination set forth in claim 9 wherein said means for actuatingthe stop device also moves the stop device out of the path of saidobject during the formation of said traversing stitch. 1

11. The combination set forth in claim 9 wherein said means foractuating the stop device also moves the stop advice out of the path ofsaid object upon the next forward feeding movement of said work-feedmechanism.

12. In combination with the work-feed mechanism and the sewing mechanismincluding a reciprocating needle of a'sewing machine for sewing workhaving needle im-' penetrable objects thereon to be traversed bystitches, an attachment to prevent contact of the needle of the sewingmechanism with said objects, comprising a stop device movable into andout of the path of said ob'ects and engaged by each thereof as the oject a proaches t e path of the needle on its wor penetrating movement,and means for actuating said stop device in timed relation to thework-penetratin movement of said needle to stop said object adjacent tobut out of the ath of the needle preparatory to the formation of thestitches traversing said object and to release said object after theneedle has penetrated the work and during the formation of saidtraversing stitches.

13. In combination with the work-feed mechanism and the sewing mechanismincluding a reciprocating needle of a sewing machine for sewing workhaving needle impenetrable objects thereon to be traversed by stitches,an attachment to prevent contact of the needle of the sewing mechanismwith said objects, comprising a stop device movable into and out of thepath of said ob'ects and engaged by each thereof as the o ject aproaches the path of the needle on its workpenetrating movement, andmeans for actuatin said stop device in timed relation to the wor -feedmechanism to stop and hold said objects adjacent to but out of the pathof the needle until the needle has penetrated the work preparatory tothe formation of the stitches traversing said object and to release saidobject upon the next forward workfeeding movement of said work-feedmechasm. 14. .The combination set forth in claim 9 with the addition ofauxiliary work-feeding 10 means, and a timed secondary sto :meansmovable into and out of the path 0 each of said objects and engagedthereby in advance of the needle to ensure preliminarily ap roximatelythe required spacing of said 0 jects on the work and proper presentationof said objects to said stop device.

15. The combination set forth in claim 12 with the addition of auxiliarywork-feeding means and a timed secondary sto means movable into and outof the path 0 each of said objects and engaged thereby in advance of theneedle to ensure preliminarily ap roximately the required spacing ofsaid 0 jects on the work and proper presentation of said objelctsto saidsto devic testimony t at I claim the invention a set forth above I havehereunto set my hand this 21st day of J anuari 1928.

- ho ROSEMAN.

